REMOVE

1. rivers
2. cardigans
3. plants
4. backdrops
5. parking lots
6. stools (seating furniture)

WHAT

1. Visual Works (hierarchy n … (1)
2. atmospheric perspective (1)
3. automobiles (1)
4. banks (landforms) (1)
5. black-and-white film (1)

More 

WHERE

1. Maryland (1)

WHEN

1. 1960 (1)
2. 1970 (1)
3. between 1960 - 1970 (1)